9660578056668 has 192 divisors, whose sum is σ = 31341343703040. Its totient is φ = 2499981278400.

The previous prime is 9660578056639. The next prime is 9660578056687. The reversal of 9660578056668 is 8666508750669.

It is a junction number, because it is equal to n+sod(n) for n = 9660578056596 and 9660578056605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 110305 + ... + 4396967.

It is an arithmetic number, because the mean of its divisors is an integer number (163236165120).

Almost surely, 2^{9660578056668} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9660578056668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15670671851520).

9660578056668 is an abundant number, since it is smaller than the sum of its proper divisors (21680765646372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9660578056668 is a wasteful number, since it uses less digits than its factorization.

9660578056668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286965 (or 4286957 counting only the distinct ones).

The product of its (nonzero) digits is 783820800, while the sum is 72.

The spelling of 9660578056668 in words is "nine trillion, six hundred sixty billion, five hundred seventy-eight million, fifty-six thousand, six hundred sixty-eight".